M.B. Doc and Evan,

Thank you for the replies.

M.B. Doc. How does the `aging of the solenoid windings` manifest itself? Can it still work marginally or does it fail completely and stick open?

If the windings age, would the resistance change when checking with an ohm meter and shouldn`t it draw more current when operating?

Mine (190e) open and closed with twelve volts and draws between 540 to 225 ma with the motor running, yet I am stuck with a 1500 rpm idle.

Thanks again.

Tinker